What is an Organism's Niche? Quiz and Flashcards

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Questions and Answers

What is a niche?

The geographic location where an organism lives

The environmental conditions an organism needs for survival (correct)

The biological factors related to an organism's habitat

The times of activity and social hierarchy of an organism

When does competition occur in a niche?

When two organisms have the same requirements for food, water, and nesting sites (correct)

When two organisms have the same temperature and humidity requirements

When two organisms share the same behavior and social hierarchy

When two organisms have the same predators and prey

What is a limiting resource or limiting factor?

A resource that is abundant in the environment

A factor that has no effect on population size

A factor that enhances the survival of a population

A resource that limits the size of a population (correct)

What is interspecific competition?

Competition between individuals of two separate species for the same resource Signup and view all the answers

Which of the following best describes intraspecific competition?

Competition between members of the same species for the same resource in the same area Signup and view all the answers

What is interference competition?

When a species directly and aggressively interferes with another's ability to obtain resources Signup and view all the answers

What happens during interference competition?

One species physically excludes another from obtaining resources, even if the resource is abundant Signup and view all the answers

Which scenario best exemplifies interference competition?

One species aggressively excluding another from obtaining resources Signup and view all the answers

What is the role of a niche in competition among organisms?

To determine the availability and access to resources for each organism Signup and view all the answers

When does interspecific competition occur?

When individuals of two separate species compete for the same resource in the same area Signup and view all the answers

Which of the following is NOT considered a part of an organism's niche?

The size of the population Signup and view all the answers

In which type of competition do individuals of two separate species compete for the same resource in the same area?

Interspecific competition Signup and view all the answers

What is the term for a resource that limits the size of a population?

Limiting factor Signup and view all the answers

In which type of competition do members of the same species compete for the same resource in the same area?

Intraspecific competition Signup and view all the answers

What happens during interference competition?

A species directly and aggressively interferes with members of another species Signup and view all the answers

Which of the following is NOT a part of an organism's niche?

The organism's genetic makeup Signup and view all the answers

Study Notes

A niche is the specific environmental conditions and resources an organism requires for survival.
Niches include temperature, soil, humidity, sunlight, food sources, water, nesting sites, hibernation space, and relationships with other organisms.
Overlapping niches can lead to competition, which occurs when two organisms have the same requirements for resources.
Limiting resources or limiting factors restrict population size and can lead to competition.
Interspecific competition: two different species compete for the same resource in the same area.
An example of intraspecific competition: all members of the same species competing for the same resource in the same area.
Interference competition: one species actively prevents another from accessing a resource, even if the resource is abundant.
Size and age differences can contribute to interference competition, with larger or older organisms excluding smaller or younger ones.

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Description

Test your knowledge about the concept of niche and competition in ecology. Understand how an organism's habitat, environmental conditions, biological factors, and behavior contribute to its niche, and how competition arises when two niches overlap.